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Statistiques de Surf de 30th Street/Ship Bottom

All swells

(any wind direction)
Thirtith street.surf.statistics.maySe.animatedSe.label.animated

Good Surf

(light / offshore wind)

The figure shows the range of swells directed at 30th Street/Ship Bottom over a normal May and is based upon 3440 NWW3 model predictions since 2007 (values every 3 hours). The wave model does not forecast surf and wind right at the coastline so we have chosen the best grid node based on what we know about 30th Street/Ship Bottom, and at 30th Street/Ship Bottom the best grid node is 22 km away (14 miles). The rose diagram illustrates the distribution of swell sizes and directions, while the graph at the bottom shows the same thing but without direction information. Five colours illustrate increasing wave sizes. Blue shows the smallest swells, less that 0.5m (1.5 feet) high. These happened only 13% of the time. Green and yellow represent increasing swell sizes and red illustrates biggest swells greater than >3m (>10ft). In either graph, the area of any colour is proportional to how commonly that size swell happens. The diagram implies that the dominant swell direction, shown by the biggest spokes, was SE, whereas the the prevailing wind blows from the SSW. Because the wave model grid is offshore, sometimes a strong offshore wind blows largest waves away from 30th Street/Ship Bottom and away from the coast. We lump these in with the no surf category of the bar chart. To keep it simple we don't show these in the rose plot. Because wind determines whether or not waves are clean enough to surf at 30th Street/Ship Bottom, you can select a similar diagram that shows only the swells that were forecast to coincide with glassy or offshore wind conditions. During a typical May, swells large enough to cause surfable waves at 30th Street/Ship Bottom run for about 87% of the time.

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Also see 30th Street/Ship Bottom wind stats

Compare 30th Street/Ship Bottom with another surf break